Greasing device



Jan. 6, 1931. d E. v. scHuLTz 1,787,999.

GREASING DEVICE Filed May 6,v 17929 A v I @712er Patented-Jan. e, 1931 ji-UNITEDJJSTATES ',EUGENEv. scnunrz, -oEBowBEIiLs :rol'rrnDAKOTA.vr

erlmiasriiev nnvcn y f 1 applicati@ med may e, 11529.. seria; m5, 360,975;

This invention relates togrease nozzles and to'combination' wrenches and grease nozzles capable of use particularly in connection with the greasing ofroller shaft'sfor endless tread 5 chain tractors. f u In'tractorsof the endless tread chaintype,

the tread chains usually run over rollers/jour'- naled on shafts bored for lubricating purposes.` The 4bores in these shafts are usually 10 closedby screw threaded plugs orcaps when in 'use,gto prevent theentrance of dirt into thebores of the shafts. To supply grease to theserollerlshafts,'th`e"plugs atthe ends Y of the shafts must be r'st unscrewed, where- `15 upon a grease "nozzle 'must be screwed into theopen endsof the shaftsbefore grease can beffor'ced from a grease hose into the bores of the shafts. Aftera shaft has been greased, the Igreasetnozzle must be unsc'rewed from the 29 shaft andthe plug for the open end of the shaft, must then be screwed back inplace.

It is a long' and tedious processfto lgrease these# shafts by :methods now employed, and although attempts have been made to substitute 25 varioust es of s rind' ressed valves for the grease closure plugsnow used on these shafts, such valves have not'proved success-l ful in practice; l Y l f It is,I accordingly,'the object'of the present invention sto provideja novell and improved tool'wherein a speed'wrench and grease noz'- zle are combined for use in V ouiickly removing grease plugs, for applying lgrease* tomembers to be greased and for replacing thegrease plugs after the greasinghas Vbeen done' in practically a continuous operation:V f'

To this end', the invention consists inthe novel parts and novel combinations of parts, hereinafter defined in ythe claims and described in the following specification, made in 'connection' with the` accompanying drawings, wherein likek reference characters refer" to the same or similarv parts throughout the yvarlous V1ews,and,1n which,

45 1 is a View in side elevation illustrat ing an embodiment of the present-invention in working'position for use in greasing a roller shaft of an endless tread chain tractor;

Fig. 2 is aninner `end elevation of the device showny in Fig. 1.; f 2 Y f l vFig. Sis avsection'taken on'theline 3-3 of Fig. 1, as indicated by the arrowsand, Fig-fl isa view taken chiefly in section on the line144= of Fig; v2, as indicated by the In accordance'with-the present invention, a suitablefsupporting frame designated by thenumeral 5 is provided, ,which frame as shown in the drawings, may be of rectangular shape and'is preferably of greater length than'height. Journaledinthe rear end-of the frame -is aV shaft 6 carrying at its rear end outwardly'from theframef 5, a hand crank 7. The forward 'end' of the shaft V6 is screw threaded and 'carries thereon acap cou- 65 phng 8 -towhich a tube 9 is' secured, the tube V9'being journaledv inthe forward end of the frame 5` and having a polygonal-shaped openingof less diameter'th-anthe main bore i ofthe tube at its forward end. v polygonal 70 shaped bar 10 projects through the polygonal shaped opening atV the forward end of the tube 9 and 'is adapted to :be telescoped rearwardly within the tube 9, 'or to be extended forwardly therefrom', the forward extension of the bar being limited by a stop pin l1 cars ried at the rear end of the bar withinthe bore ofthe tube 9.' The'bar lOvat its forward end has a 'small recess 10a formed therein within which a spring pressed yball '12 is seated; A80 socket l13, or other suitable tool, adaptedto 'beused forengagement with an oil plug is detachably mounted on the forwardV end -of the bar 10, the spring pressed ball 10 being adapted to engage a recess in the shank of =35 the socket or similar tool, Vto prevent the'unldesired removalof the socket or similar tool.

The shaft 6 andtube 9 connected thereto, are held from lateral movement on the frame y5 asby means of collars 14 and v15. Secured im.

to thescrew threaded ,portion of (the shaft 6 vadjacent the center of the frame 5, -is a pinion 16 held from Vremoval 'on the shaft by means of jamb'nutsl.y

A pipe 18 is'jou'rnaled in the forward end '95 ofthe frame 5 and preferably extends parallel with thev shaft r6; `A nozzle 19I screw threaded at-its forward end is lvdetachabl'y secured tothe forward end of the pipe 18 tends rearwardly from the forward end of the frame and is screw threaded at its rear bearing against bei? tween the flange of the'nipple andl the rear end of the cup 22. A coiled pressure''slpriii'gu situated within the cupj22Areacts.b etweenl the coupling 21 and thefrwar'd eiicl'of the nipple The rear end of? then'ipple" is cured ltothe sainerearwardl-y from-the frame 5.- A-suitablefcoupling27 connects-theY litting 26 to a grease hose 28 preferably ofthe flexible armoured cable'f type; t withstand Y pressure.- The grease hose-f28fwillrunto some suitable sourceofgrease supply (not illustrated) such as to'afpressure grease gun.

gear 29y mounted onf the screw threaded portionv at the" rea-rend-i of pipe 1 8-is held thereon as by j arnbnuts 30 a nd ithepinionf16 meshes with the gear29: The p'ipe fitting 26 will preventv lateral movement ofthe pipe .18 and parts associated?therwithrih'frane 5 in a forward directipn, while the cup- 22 will prevent lateral shifting E-nfiovement lofl ythe shaft-` 18 andp'arts associated therewith ina rearward direction. The spring-- V25 bearingeagainst .the nipple23 andvr fora-zing"i the sameag'ainst y thefwasl-ler 24 prevetstle leakage of greasethrough the opening -at the rea-r end ofl the cup 22-as the pipe-*18,cap coupling 21 and cup-22 are' rotatedrelative tofthe'ni-pple 23, pipe ii'tting26; coupling 27 andhose28.V 2 r To illustrate vthe useofthe present device, parts of a tread chaingtrac'trare-sliown in Fig; l'. rTo angle iron framemembers of the tractor are designated by the numeral 31 and these frame members carry U-clips L32 within .which boredl shafts 33 arel mounted: The

rollers 34 over` which the linksv 35. of the tread vchainfrun aref I-nountedon the shafts 33 andthe "shafts 33 are bored inv or'd-er that grease' may be suppliedto the-rollers 34 as they Vrotate on the shafts-.- The shaft 33. is illustratedl as having its bore threaded atits outer. end` and a screw threaded plug 36 is screwed in place inthe bore at the outer end oft-he shaft 33.kv To supp'lygreasetothebore of the shaft 33,the plug 36must-lirst be unscrewed, whereupon a grease nozzle ni'ust be screwed "into the bore. GrreaseV can then be Vsuppliedunder pressure through the grease nozzle, whereupon the grease nozzle must be unscrewed from the bor in: the-shaftI and then the plug' 36 must be screwed' yback in place All this work can-"befdone"4 with the Hpresent device inl practically a'f'continuous simple.

operation. The device will be preferably first situated as shown in Fig. 1 with the bar 10 extended forwardly from the tube 9 toa position where it projects4 beyond the nozzle 19. The socket 13 or other similar tool provided to properly engage the head of the plug 36, may then be engagedwithf-the plug,

whereupon Vby rotation of-lthe. crank-.7 inv a counter clockwisedirection vthe plug 36 mayin the tube 9, whereupon the nozzle 19 may Vbeaiopli'ed to the outer end of the shaft 33,

andgthenozzle can be quickly screwed in placefin th'e lsci'eiiftlreaded bore of the shaft 33: :byy continuing te -turn the cran kA 7{ 'i n` a counter cleekwisefdiree'tion.- The-pipe' 18 and c'up 22will1tu'rn rela-tivefto the grease during this movementand there lwilltl-rusbe no torsional strain placed on thegrease-hose 28. j Grrease. may then be f forced under pressurethro'ugh'the hose 28, coupling 27,- fitting- 26, ni-pple 23,1ffmp` 2l-2, pipe '18,1 ittingd20` and nozzle 19l into'th'e bore'of-the-shaftS. Af-l ter the shaft has "beerrsuucientlyf lubie'atedi, thenozzlej 1-9 may be readilyv unserew'edfrom the shaft by' merely turning. the 'crank-7 in a clockwise direction,-.=whereuponthe, bar'v 1 0 may' be againv forwardly? extendedandjwthe plug v36 may bef engagedI in thedsoelftet` 13,012Y Vsimi-lar tool,` and screwed' baclrv in place in the borefoftheshaftBB- by continuin'gto-ro tate Athe shaft-7 ini a clockwise direction.; In this manner,- -allthefrollershafts-in anend less-tre'adfchain tractor can be very quickty lubricated# i y Y Although the.r device isI describediu con'- nection with its-usefor greasing'thereller shaftsof endless-.tread cha-in- Ytractors, itgwi-ll be understood-that thedevice caribe usedfer removing liquid'plugs and supplying'nliquid of varioustypes wherever desi-red `AVarious types of nozzles may be substituted-for the nozzle 19 fto suit the various @requirements of the deviee,=andfvarious typesyof tools may,- be substituted 'for thesocket 13 to fitl plugs or caps-ofvarioustypesr This' device has been amply demonstrated in actual practiceandhas been'foun'd tobe very successful for the-purposes intended. The partsV arey few and the construction is Y It -will,of course, be understoodr thatvarious changesfmay beniadeY inf the ferniyde'- tails, arrangementandproportions of thevari-ous parts .without departingffrom-the scope ofthepresentinvention.A

Whatis claimedisz-ly v s 1. A combination fwrexeh and greasenozzle comprising, :JZ-suitable support-ing frne, a shaft journaledriii said fraiiie, means for turning said shaft,I ern-extensible plug engaging wrench mcunted: at the'frwardfend of said shaft,`a pipejournaledfin said frame,

means for coupling a grease supply losefor c said pipe and a crank for turning said shaft;y

they like to the rear endof said pipe, saidpipe having a portion at its forward end adapted to be engaged in an oil plug opening kwhen said pipe is rotated in one direction and to. be disengaged therefromwhenV said pipe" is rotated in an opposite direction, and means for rotating said pipe as saidshaft is turned, whereby said wrench may beextended from said shaft and engaged with an oil plug to permit the removal thereof when said shaftv is rotated and then said lwrench may bewithdrawn 'from extended position and said'pipe may be quickly engaged with the membery from which ythe oil plug is removed. 2. A combination speed wrench and grease nozzle comprising a suitable frame, a shaft journaled in said frame, a bar extensiblev 3. A greasing device comprising, a suitable supporting frame, a pipe journaled in said frame, a detachable nozzle secured to the forward end of said pipe and having a screw thread at its outer end for engagement with a member to be greased, means for coupling said pipe at its rear end to a non-rotatable grease hose, a shaft mounted in said frame, a pinion on said shaft, a gear on said pipe meshing with said pinion and a crank for ro-v tating said shaft.

4. A greasing device comprising, a suitable supporting frame, a shaft journaled in said. frame, a bar extensible from the forward end of said shaft, a socket secured to the forward end of said bar, a crank secured on the rear end of said shaft, a pipe liournaled in said frame and extending parallel to said shaft,

said pipe having a screw threaded nozzle at its forward end for engagement with a mem-v ber to be greased, means for coupling said pipe at its rear end to a non-rotatable grease hose, apinion onsaid shaft and agear on said pipe in mesh with said pinion.

In testimony whereof I affix my signature.

EUGENE V. SCHULTZ. 

